256711248

素因数分解:

$2^4\times 3^3\times {\mathrm{29}}^1\times {\mathrm{31}}^1\times {\mathrm{661}}^1$

素因数の和:738

約数の個数: 160

約数和(自身を含む): 788044800

約数和(自身を除く): 531333552

約数列:

[1, 2, 3, 4, 6, 8, 9, 12, 16, 18, 24, 27, 29, 31, 36, 48, 54, 58, 62, 72, 87, 93, 108, 116, 124, 144, 174, 186, 216, 232, 248, 261, 279, 348, 372, 432, 464, 496, 522, 558, 661, 696, 744, 783, 837, 899, 1044, 1116, 1322, 1392, 1488, 1566, 1674, 1798, 1983, 2088, 2232, 2644, 2697, 3132, 3348, 3596, 3966, 4176, 4464, 5288, 5394, 5949, 6264, 6696, 7192, 7932, 8091, 10576, 10788, 11898, 12528, 13392, 14384, 15864, 16182, 17847, 19169, 20491, 21576, 23796, 24273, 31728, 32364, 35694, 38338, 40982, 43152, 47592, 48546, 57507, 61473, 64728, 71388, 76676, 81964, 95184, 97092, 115014, 122946, 129456, 142776, 153352, 163928, 172521, 184419, 194184, 230028, 245892, 285552, 306704, 327856, 345042, 368838, 388368, 460056, 491784, 517563, 553257, 594239, 690084, 737676, 920112, 983568, 1035126, 1106514, 1188478, 1380168, 1475352, 1782717, 2070252, 2213028, 2376956, 2760336, 2950704, 3565434, 4140504, 4426056, 4753912, 5348151, 7130868, 8281008, 8852112, 9507824, 10696302, 14261736, 16044453, 21392604, 28523472, 32088906, 42785208, 64177812, 85570416, 128355624, 256711248]

約数ペア:

[(1, 256711248), (2, 128355624), (3, 85570416), (4, 64177812), (6, 42785208), (8, 32088906), (9, 28523472), (12, 21392604), (16, 16044453), (18, 14261736), (24, 10696302), (27, 9507824), (29, 8852112), (31, 8281008), (36, 7130868), (48, 5348151), (54, 4753912), (58, 4426056), (62, 4140504), (72, 3565434), (87, 2950704), (93, 2760336), (108, 2376956), (116, 2213028), (124, 2070252), (144, 1782717), (174, 1475352), (186, 1380168), (216, 1188478), (232, 1106514), (248, 1035126), (261, 983568), (279, 920112), (348, 737676), (372, 690084), (432, 594239), (464, 553257), (496, 517563), (522, 491784), (558, 460056), (661, 388368), (696, 368838), (744, 345042), (783, 327856), (837, 306704), (899, 285552), (1044, 245892), (1116, 230028), (1322, 194184), (1392, 184419), (1488, 172521), (1566, 163928), (1674, 153352), (1798, 142776), (1983, 129456), (2088, 122946), (2232, 115014), (2644, 97092), (2697, 95184), (3132, 81964), (3348, 76676), (3596, 71388), (3966, 64728), (4176, 61473), (4464, 57507), (5288, 48546), (5394, 47592), (5949, 43152), (6264, 40982), (6696, 38338), (7192, 35694), (7932, 32364), (8091, 31728), (10576, 24273), (10788, 23796), (11898, 21576), (12528, 20491), (13392, 19169), (14384, 17847), (15864, 16182)]